The RAM® Pin-Lock™ 4-Hole AMPS Round Plate Adapter (RAP-202PLU) features a unique pin-lock pattern, most often found on the RAM® Tough-Claw™, Tough-Clamp™ and many other RAM® product lines. The patent pending RAM® Pin-Lock™ pattern provides a secure connection style that locks with other Pin-Lock™ components. This component features a 4-hole AMPS pattern, enabling users to create their own custom mounting solution. Drill the base down and connect the RAM® Pin-Lock™ Ball Adapter or connect the adapter to any RAM® holder or component with a 4-hole AMPS pattern.